document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1132891>Question 1132891</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A telephonist claims that he gets 10 calls every five minutes. To demonstrate this to his boss he makes a tape lasting five minutes. What are the probabilities that he gets:<BR>\n" );
document.write( "a. no calls in the five minutes<BR>\n" );
document.write( "b. less than three calls; and<BR>\n" );
document.write( "c. exactly 10 calls? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #750129 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=750129\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Poisson with parameter 10<BR>\n" );
document.write( "p(0)=e^(-10)*10^0/0!=e^(-10) or 0.00005<BR>\n" );
document.write( "p(1)=e^(-10)*10^1/1!=0.0005<BR>\n" );
document.write( "p(2)=e^(-10)*10^2/2!=0.0023<BR>\n" );
document.write( "probability of fewer than 3 calls is 0.0029<BR>\n" );
document.write( "p(10)=e^(-10)*10^10/10!=0.1251 </SPAN>\n" );
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